Free ASCP ASCP-MLT Practice Exam with Questions & Answers | Set: 12

Thyroid-stimulating immunoglobulins, or TSI's, are IgG antibodies that can bind to thyrotropin (TSH) receptors on the thyroid gland. TSIs mimic the action of TSH, causing excess secretion of thyroxine and triiodothyronine. The TSI level is abnormally high in persons with hyperthyroidism due to Graves' disease.

Which of the following is an autoantibody that binds to TSH receptor sites on thyroid cell membranes preventing thyroid-stimulating hormone binding?

Provide the equivalent measurement for 1 ounce.

G6PD deficiency causes an increased suseptibility to the oxidation of hemoglobin, which in turn, causes the precipitation of hemoglobin inside of the red blood cell.

Which one of the following conditions is associated with glucose-6-phosphate dehydrogenase (G6PD) deficiency?

Refrigerated temperatures, those close to 4 ºC, are recommended for the preservation of enzyme activity in a patient sample.

Chemistry

The recommended storage temperature for the preservation of activity for MOST enzymes is:

Pink or Red stopper tubes can be used for Blood Bank!

Question options:

P. vivax characteristically displays Schuffner's dots and often enlarged RBCs along with brownish granules. P. vivax can also have 12-24 merozoies in each cell, actually filling the entire RBC. This parasite also has very irreglar shapes often referred to as "Ameboid".

P. falciparum and P. malariae do not display Shuffner's dots, therefore could not be the correct choice.

P. ovale does display Shuffner's dots in all stages, but characteristically has about 8-12 merozoites in rosettes or irregular clusters inside the RBC. Also, P. ovale characteristically shows enlarged, ovoid RBCs with fimbriated edges.

Identify the parasite of a patient with suspected malaria who demonstrates the following findings on a blood smear:

- Enlarged RBCs, some with fine brownish granules

- > 15 parasites in some cells

- Ameboid structures

- Schuffner's dots